He sat there ,waiting for his son 还有 My mum was in her room,absorbed in her experiment

题目

He sat there ,waiting for his son 还有 My mum was in her room,absorbed in her experiment
为什么第一句用ing形式 第二句要用ed形式吖 不是说ing表主动 ed表被动吗 那第二句还是伴随状语吗

答案

索尼w0右边的个选项键是干什么的我想隐藏所有的图标以前00的方法不能用了谁还有方法啊急等～